Fix input breaking PAUSE

FLAGS var must be preserved entirely.

Author: boriel

src/arch/zx48k/library/input.bas

@@ -27,10 +27,13 @@ FUNCTION input(MaxLen AS UINTEGER) AS STRING
     DIM LastK AS UBYTE AT 23560: REM LAST_K System VAR
     DIM result$ AS STRING
     DIM i as UINTEGER
+    DIM tmp as UByte
 
-    result$ = ""
+    LET tmp = PEEK 23611
     POKE 23611, PEEK 23611 bOR 8 : REM sets FLAGS var to L mode
 
+    result$ = ""
+
     DO
         PRIVATEInputShowCursor()
 
@@ -56,7 +59,7 @@ FUNCTION input(MaxLen AS UINTEGER) AS STRING
 
     LOOP UNTIL LastK = 13 : REM "Enter" key code is 13
 
-    POKE 23611, PEEK 23611 bAND 0xEF : REM resets FLAGS var
+    POKE 23611, tmp : REM resets FLAGS var
 
     FOR i = 1 TO LEN(result$):
         PRINT OVER 0; CHR$(8) + " " + chr$(8);

src/arch/zxnext/library/input.bas

@@ -27,10 +27,13 @@ FUNCTION input(MaxLen AS UINTEGER) AS STRING
     DIM LastK AS UBYTE AT 23560: REM LAST_K System VAR
     DIM result$ AS STRING
     DIM i as UINTEGER
+    DIM tmp as UByte
 
-    result$ = ""
+    LET tmp = PEEK 23611
     POKE 23611, PEEK 23611 bOR 8 : REM sets FLAGS var to L mode
 
+    result$ = ""
+
     DO
         PRIVATEInputShowCursor()
 
@@ -56,7 +59,7 @@ FUNCTION input(MaxLen AS UINTEGER) AS STRING
 
     LOOP UNTIL LastK = 13 : REM "Enter" key code is 13
 
-    POKE 23611, PEEK 23611 bAND 0xEF : REM resets FLAGS var
+    POKE 23611, tmp : REM resets FLAGS var
 
     FOR i = 1 TO LEN(result$):
         PRINT OVER 0; CHR$(8) + " " + chr$(8);